I think zombies from the west are sronger because they contain infectious virus and they turn anyone bitten into zombies and can grow in large niumbers in a short time....and their looks of eating is disgusting.....~

both sides have strong monsters, but Asian tend to have stronger monsters, not because it's better but because i believe it is almost like tendency in Asia of having a more megalomaniac ideas... example: i believe that in both sides one of the strongest creature in fantasy are dragons, if you compare Asian dragons: demigods with western dragons: flying magical beasts (most of them with an intelligence of an animal) you will see that the Asian ones are stronger...

I'd say that they both have incredibly strong monsters, but if you notice, Eastern monsters have more humanity then Western, and tend to have mortality, while Western monsters are infoulable and immortal. In example, Oni's or Youma's can be killed, Demons can only be deported by to hell. While Western usually are "Stronger", Eastern usually have more unique and impressive abilities, at least, in my opinion.